package com.powernode.interceptor;

import com.powernode.common.Constants;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor{

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object attribute = request.getSession().getAttribute(Constants.SESSION_USER_KEY);
        if (null==attribute){
            //拦截器有问题request.getContextPath()为获取/index.jsp之前路径
            // response.sendRedirect(request.getContextPath()+"/index.jsp");
            response.sendRedirect("/index.jsp");
            return false;
        }else {
            return true;
        }
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
